add warm begin end

wfx.py

@@ -111,9 +111,11 @@ class WFX():
         if warmed < warmed_total:
             logger.info(f'warming up T2I pipeline...')
             for _ in range(warmed_total):
+                begin = torch.cuda.Event(enable_timing=True)
                 self.T2IPipeline(**warmup_kwargs)
+                end = torch.cuda.Event(enable_timing=True)
                 warmed += 1
-                logger.info(f'warmed {warmed}/{warmed_total}')
+                logger.info(f'warmed {warmed}/{warmed_total} - {begin.elapsed_time(end)}ms')